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Home Astro-Imaging Focal Reducers & Flatteners SkyWatcher EvoLux 82ED 0.9x ED Focal Reducer/Flattener
Two-element design field falattener incorporating one ED element for improved performance over standard glass types. Reduces the standard focal length of the Evolux-82ED by a factor of 0.9x and provides top quality field-edge correction. The flattener / reducer illuminates a full frame format and provides pinpoint star imaging over a 36mm image circle. Provides focal length of 477mm & f/5.8. Field of View 4.34°. Back focus 55mm. Fully multi-coated. Supplied with adaptor/field-rotator. Filter thread inside adaptor to mount 2 filters. M56x1 female / M48 male threads. Sky-watchers M48 Canon or Nikon T-ring adaptors (product codes 20237 & 20238) are perfect for using your DSLR.
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